Is there a car detection software written in Tensorflow or Keras with Python?
I recall seeing several data sets on Kaggle on the topic of car images. Usually these data sets have associated with them user uploaded python kernels that do either classification( what make of car) or detection ( show a bounding box on the car).
I would recommend you go to Kaggle then select data sets and do a search for 'cars'. I did a quick look and found a data set at https://www.kaggle.com/jessicali9530/stanford-cars-dataset that has 18 kernels associated with it. There well may be many more data sets available. Good luck in your search!